Yielding bobbin support for multicolor loom magazines



Dec. 13, 1927.

B. W. BROUWER YIELDING BOBBIN SUPPORT FOR MULTICOLOR LOOM MAGAZINES Filed July 1926 toward transfer position.

Patented Dec. 13, 1927.

UNITED STATES PATENT OFFIOE.

BENJAMIN W. BBOUWER, 0F AUBURN, MASSACHUSETTS, ASSIGNOR TO CROMPTON 80 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

YIELDING BOBBTN SUPPORT FOR MULTICOLOR LOOM MAGAZINES.

Application filed July 30, 1926. Serial No. 125,852.

This invention relates to improvements in bobbins supports for weft replenishing mechanisms more particularlypf the multicolor type, and it is the princi al ob1ect of the invention to provide a yieldable support for the butts of bobbins so designed as to have an extension on which the bobbm will be moved as soon as released from. the supporting cradle.

In multi-color weft replenishlng mechanisms the bobbins are usually arranged in a series of vertical compartments and there is usually a cradle or delivery device located at the bottom of each compartment effective to advance the bobbin toward transfer position. The bobbins roll down inclined yielding guides or supports after leaving the cradle and it has been found that when the bobbin strikes the support it is subject to rebounding such as interferes with the proper movement of the same It is a further object of my invention to prevent this rebounding by supplying the yielding support with a lip extending into the path of the bobbin to receive the latter as soon as it moves from the cradle toward transfer position.

In Patent No. 1,554,372 there is shown a stationary support having an auxiliary run to guide the bobbin as the same passes from the cradle toward transfer position and in co-pendin application Ser. No. 739,692 filed by H iime and King the forward support for the butt of the bobbin is shown as yieldable under a pressure considerably heavier than that which holds the rear support in position and it is a further object of my invention to construct the yieldable support as shown in said application with the auxiliary run set forth in the aforesaid patent, the auxiliary run being so disposed that as the support yields under excessive pressure said auxiliary run will be clear of adjacent parts.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.-

In the accompanying drawings wherein I have shown a convenient embodiment of my invention,

Fig. 1 is a vertical section through a multi-color weft re lenishing mechanism of the usual type loo ing toward the center of the loom and showing ray-invention applied to the mechanism in'normal position, Fig. 2 is a detail horizontal section on line 2-2 of Fig. 1,

Fig. 3 is a diagonal section on line 33 of Fig. 1,

Fig. 4 is a vertical section on line 4 -4 of Fig. 3, and

Fig. 5 is a perspective view of the suppor Referring to the drawings it will be seen that l have shown a loom frame 10 having a multi-color weft replenishing mechanism 11 provlded with flanges 12 which define a bobbin compartment 13. It is to be understood that there are several compartments 1n the usual type of mechanism, only one being shown herein. A so-called cradle 14 has one end thereof pivotally mounted as at 15 on the frame 11 and the other end of said cradle may be supported in the usual manner by structure not shown. Said cradle 1s provided with a yarn engaging body 16 extending under the weft to support the bobbin. The cradle is further rovided with a finger 17 somewhat shorter t an that \usually employed and'servin part of the butt of the b0 bin which is toward the center of the replenishing mechanism. Under normal conditions the cradle is to the right of the position shown in Fig. 1 and 1s not occupied by a bobbin but at the time of indication of weft exhaustion the cradle is rocked to occupy a position similar to that shown in the drawings, whereupon the lowest bobbin B of the stack will fall into the cradle and be supported by the body 16. Upon the subsequent arrival of the indicating shuttle the cradle will be restored to normal position by being given a right hand oscillation from the position shown in Fig. 1, this rocking of the cradle releasing the bobbin contained therein so that the latter will move toward transfer position. This part of the structure may be substantially the same as is set forth in Patent No. 1,030,748.

There are usually provided two guides 01' supports for the butt of the bobbin, the rear support 18 being yieldable under com aratively light pressure to move rearwar y a to support that I slight distance at the time of transfer and a f considerable distance when the bobbin is not properly discharged from the magazine.

. The hub is connected to the bobbin run way 22 being preferably provided with a slight rib 24 which engages the rings on the butt of the bobbin to revent endwise movement thereof away rom the giveway 19 when moving toward transfer posltion.

ortion 22 b a stop portion 25 normally eld against t e bottom 26 of the frame 11 by means of a relatively heavy tension spring 27 the upper end of which is held by a pin 28 secured to the replenishing frame and the lower end of which passes under a lug 29 carried by the support 19 adjacent the stop portion 25. The spring 27 is heavy and is designed to yield only under excessive pressure such as occurs when a bobbin is caught between the transferrer arm 30 and the inclined run 22. Under normal transferring conditions the support 19 will be held as though rigid by the spring 27, and may be the same as set forth in the aforesaid co-pending application, said support representing a comparatively recent improvement 1n multi-color weft replenishing mechanisms.

My invention relates more particularly to a device for guiding a bobbin from the cradle to the inclined surface 22 and in car- ,rying out my invention I extend one side of said giveway forwardly and upwardly as indicated at 40, said extension having an upper surface 41 extending above the surface 22 as is indicated clearly in Fig. 4. Said extension also projects approximately to the horizontal center of the compartment 13 and lies close to the adjacent end of pin 17 of the cradle 14.

When the bobbin B is discharged from the cradle as previously described the wooden end 42 of the bobbin butt will enengage the elevated surface 41 before the steel rings 43 of the bobbin engage the surface 22 and as the bobbin moves downwardly toward the shuttle S the rings will gradually roll onto the surface 22. In this way I an abrupt sharp engagement of the steel rings with the giveway surface 22 is avoided and there is therefore no tendency for the butt of the bobbin to rebound upwardly. It has been found in magazines as heretofore constructed that this upward reboundin retards the downward movement of the bobbin to'such an extent that the latter is not properly positioned above the shuttle at the time the transferrer arm engages the bobbin and the result is either a broken bobbin or a broken magazine. The extension 40 lies closely adjacent the frame 11 and is of considerably less width than the inclined surface 22 so that an appreciable length of pin 17 extends under the bobbin to support the same prior to delivery of the bobbin by the cradle to the support. It will be seen that the auxiliary guide or extension can move about stud 21 as a pivot without interfering with adjacent portions either of the magazine or the cradle.

From the foregoing it will be seen that I have provided a yielding support for a multi-color weft replenishing mechanism having an auxiliary run or guide for the bobbin lying intermediate the cradle and the primary guiding surface of the support, and effective to cause the bobbin to be delivered to the main run by a gradual movement which will prevent rebounding of the bobbin. Furthermore, it will be seen that the extension is free to move about the stud 21 without interfering with the cradle, said extension iprojecting at least as far as the center 0 the compartment 13 and receiving the wooden end 42 of the bobbin before the rings 43 engage the surface 22.

In the aforesaid Richardson patent there was an opportunity for the rings ofthe bobbin to strike the upper end of the main guideway but as shown in Fig. 4 herein the surface 41 of the auxiliary guide extends further above the main surface 22 than the rings project beyond the wooden part of the butt of the bobbin and that said inclined surface 41 is tapered gradually to merge with the surface 22 as shown in Figs. 4 and 5.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is:

1. In a loom weft replenishing mechanism having a bobbin compartment and a pivoted cradle having a bobbin su porting portion positioned to control the de ivery of bobbins from the compartment toward transfer position, a bobbin support pivoted to the replenishing mechanism and having a downwardly inclined surface, and an auxiliary guide extending from the support and being of less width than the support and lying closely adjacent to but out of the path of the supportlng portion as the cradle pivots, said gulde extending into the path of a bobbin which is passing from the cradle toward the support to guide the bobbin onto the support.

2. In a loom weft replenishing mechanism having a bobbin compartment and a pivoted cradle having a bobbin supporting portion positioned to control the delivery of bobbins from the compartment toward transfer position, a bobbin support pivoted to the replenishing mechanism and having a downwardly inclined surface, and an auxiliary guide extending from the support and being of less width than the support and lying closely adjacent to but out of the path of the supporting portion as the cradle pivots, said guide extending into the path of a bobbin which is passing from the cradle toward the support to guide the bobbin onto the support, the bobbin engaging surface of the auxiliary guide extending above the guiding surface of the support.

3. In a loom we t replenishing mechanism having a bobbin compartment and a pivoted cradle having a bobbin supporting portion positioned to control the delivery of bobbins from the compartment toward transfer position, a bobbin support pivoted to the replenishing mechanism and having a downwardly inclined surface, and an auxiliary guide extending from the support and being of less width than the support and lying closely adjacent to but out of the path of the supporting portion as the cradle pivots, said guide extending into the path of a bobbin which is passing from the cradle toward the support to guide the bobbin onto the support, said auxiliary guide extending, to a point approximately under the horizontal center of the bobbin compartment.

4. In a loom Weft replenishing mechanism having a bobbin compartment and a pivoted cradle having a bobbin supporting portion positioned to control the delivery of bobbins from the compartment toward transfer position, a bobbin support pivoted to the replenishing mechanism and having a downwardly inclined surface, and an auxiliary guide extending from the support and being of less width than the support and lying closely adjacent to but out of the path of the supporting portion as the cradle pivots, said guide extending into the path of :1. bobbin which is passing from the cradle toward the support to guide the bobbin onto the support, said auxiliary guide being movable with the support as the latter pivots and be ing out of contact with the cradle in all angular positions.

5. In a loom weft replenishing mechanism having a bobbin compartment and a cradle positioned to control the delivery of bobbins from the compartment toward transfer position, a bobbin support pivoted to the replenishing mechanism and having a downwardly inclined surface, and an auxiliary guide extending from the support and being of less width than the support and extending into the path of a bobbin which is passing from the cradle toward the support to guide the bobbin onto the support, the upper surface of the auxiliary guide being above the bobbin guiding surface of the support and extending beyond the upper part of the adjacent portion of the support to engage the wooden part of the bobbin before the rings of the bobbin engage the main support and to guide the rings gradually onto said main support.

In testimony whereof I have hereunto affixed my signature.

BENJAMIN W. BROUWER. 

